Veterinary Drug Handbook (VDH) is the reference veterinarians turn to when they want an independent source of information on the drugs that are used in veterinary medicine today.


Abnormal appearance of histiocytes in the blood, (Histiocytes are produced by the bone marrow and are normally immobile until stimulated by inflammation, They are a type of antigen presenting cell, )
  • cutaneous benign proliferation of nodules in or under the skin
  • malignant a rapidly invasive proliferation of neoplastic (new growth) histiocytes, No known treatment, always fatal,
  • systemic proliferation of histiocytes invading the skin and lymph nodes, Can go into remission for years, or progress to the malignant form, Can be treated, but not cured,

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